Home / 81,629-126,138

Finding the Third Proportional to 81,629 and 126,138

Calculator

Solution

The third proportional to 81,629 and 126,138 is: 194,915.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,629 : 126,138 = 126,138 : x
  2. Step 2: Convert to fraction form
    81,629/126,138 = 126,138/x
  3. Step 3: Cross multiply
    81,629x = 126,138 × 126,138
  4. Step 4: Simplify right side
    81,629x = 15,910,795,044
  5. Step 5: Solve for x
    x = 15,910,795,044/81,629
  6. Step 6: Final answer
    x = 194,915.96

Related Problems

Find third proportional to 40,814.50 and 63,069
Half scale
Find third proportional to 163,258 and 252,276
Double scale
Find third proportional to 81,631 and 126,141
Similar ratio
Find third proportional to 122,443.50 and 189,207
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.